#!/usr/bin/env python# -*- coding: utf-8 -*-from socket import *class TcpClient:    #测试，连接本机    HOST='127.0.0.1'    #设置侦听端口    PORT=1122     BUFSIZ=1024    ADDR=(HOST, PORT)    def __init__(self):        self.client=socket(AF_INET, SOCK_STREAM)        self.client.connect(self.ADDR)        while True:            data=input('>')            if not data:                break            #python3传递的是bytes，所以要编码            self.client.send(data.encode('utf8'))            print('发送信息到%s：%s' %(self.HOST,data))            if data.upper()=="QUIT":                break                        data=self.client.recv(self.BUFSIZ)            if not data:                break            print('从%s收到信息：%s' %(self.HOST,data.decode('utf8')))                        if __name__ == '__main__':    client=TcpClient()